(19)
(11) EP 3 679 202 B1

(12) EUROPEAN PATENT SPECIFICATION

(45) Mention of the grant of the patent:
07.12.2022 Bulletin 2022/49

(21) Application number: 18778715.5

(22) Date of filing: 05.09.2018
(51) International Patent Classification (IPC): 
E04B 9/16(2006.01)
E04B 9/34(2006.01)
E04B 9/36(2006.01)
E04B 9/18(2006.01)
(52) Cooperative Patent Classification (CPC):
E04B 9/16; E04B 9/34; E04B 9/366; E04B 9/183
(86) International application number:
PCT/US2018/049542
(87) International publication number:
WO 2019/050946 (14.03.2019 Gazette 2019/11)

(54)

METAL BAFFLES

METALLLEITBLECHE

DÉFLECTEURS MÉTALLIQUES


(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 06.09.2017 US 201715696597

(43) Date of publication of application:
15.07.2020 Bulletin 2020/29

(73) Proprietor: USG Interiors, LLC
Chicago, IL 60661-3676 (US)

(72) Inventors:
  • UNDERKOFLER, Abraham M.
    Salem, Wisconsin 53168 (US)
  • GULBRANDSEN, Peder J.
    Aurora, Illinois 60503 (US)
  • PAULSEN, Mark R.
    Waukegan, Illinois 60087 (US)
  • CAROLUS, Kyle S.
    Guelph, Ontario N1E 5K9 (CA)

(74) Representative: Findlay, Alice Rosemary 
Reddie & Grose LLP The White Chapel Building 10 Whitechapel High Street
London E1 8QS
London E1 8QS (GB)


(56) References cited: : 
DE-U1- 9 310 494
FR-A- 2 971 524
DE-U1- 20 107 617
GB-A- 2 026 077
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    BACKGROUND OF THE INVENTION



    [0001] The invention relates to acoustical baffles and for clips for suspending the baffles.

    PRIOR ART



    [0002] Acoustical baffles are used to absorb noise in enclosed occupied spaces. A common type of baffle is fabricated from sheet metal formed into an elongated panel or shaft of U-shaped cross-section. The sheet metal can be perforated to improve sound absorption and sound absorbing material can be positioned in the interior of the baffle. Acoustical baffles have been suspended on conventional suspended ceiling grid in so-called "open plenum" spaces and have been suspended directly from cables.

    [0003] There is a need for systems and componentry that afford strong suspended assemblies capable of resisting wind loads or other disturbances without a need for separate fasteners. Suspension clip components should be inexpensive to manufacture and allow for baffle suspension from planar, inclined or curved ceiling grid as well as directly from overhead vertical cable.

    [0004] De 20107617 U1 discloses a clip for suspending an elongated U-shaped sheet metal baffle comprising a stamped sheet metal body, the body having a U-shaped configuration that is inverted in use, the body having a central generally horizontal web and two generally vertical, mutually parallel flanges depending from the web, each flange having ends with a slot at each end, each slot having a generally right angle shape, the slots of one flange being aligned with the slots of the other flange on lines perpendicular to the flanges, each slot being adjacent the web, open at an end of a respective flange, extending horizontally inwardly adjacent the web and downwardly away from the web at a distance from the flange end, the web having ends extending longitudinally beyond the downward portions of an adjacent pair of flange slots whereby said web ends serve to vertically restrain right angle shaped flanges at upper ends of U-shaped baffles.

    SUMMARY OF THE INVENTION



    [0005] The invention is defined by the claims.

    [0006] The invention provides a baffle geometry and complementary suspension clip that achieves high separation force resistance without supplemental fasteners. The disclosed clip can be arranged to attach to ceiling grid in transverse or other orientations and can be arranged on inclined or vertically curved grid runners while allowing the baffle to hang in a vertical orientation. Additionally, the clip can be carried directly on vertical suspension cable or wire.

    [0007] The disclosed baffle is characterized by mounting flanges that interlock with complementary slots on the suspension clip. The geometries of the baffle flanges and clip slots are highly resistant to separation when the baffle is subjected to lateral forces.

    [0008] The disclosed clip in one arrangement is assembled with a grid tee connector preferably with a pivot joint for transverse or parallel relation between the baffle and supporting grid tee. The connector has a low profile that allows the baffle and clip to be used in installations where the supporting grid tees also carry ceiling tile. In another arrangement, the baffle clip and grid tee connections are joined with an intermediate horizontal pin joint that with two other pivot joints gives the clip three degrees of freedom, enabling the clip to connect with an inclined grid member while allowing the baffle to hang in a vertical orientation.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0009] 

    FIG. 1 is an exploded perspective diagrammatic view of a ceiling grid, ceiling tile, acoustical baffle and a clip assembly of the invention;

    FIG. 2 is a perspective view of a clip element of the invention used in the clip assembly of FIG. 1 and in other arrangements;

    FIG. 3 is a perspective view of a clip assembly of the invention having three axes of freedom;

    FIG. 4 is an elevational view of the clip of FIG. 3;

    FIG. 5 is a diagrammatic view of a baffle arrangement in which the clip of FIG. 3 is used;

    FIG. 6 is a perspective view of a clip not forming part of the invention for joining intersecting baffles;

    FIG. 7 is an edge view of a long side of the clip of FIG. 6; and

    FIG. 8 is a perspective view of intersecting baffles joined by the clip of FIG. 6.


    DESCRIPTION OF THE PREFERRED EMBODIMENT



    [0010] In the foreground of FIG. 1 is shown a sheet metal clip assembly 10 comprising a unitary baffle support clip or part 11 and a unitary grid tee engaging clip or part 12. The parts 11 and 12 are pivotally joined together by a metal rivet 13. A portion of an acoustical baffle 14 is shown in the background at the right in FIG. 1. Portions of a grid tee 16 and ceiling tile 17 supported on the grid tee are shown in the background on the left in FIG. 1.

    [0011] FIG. 2 illustrates the baffle suspending clip part 11 which has an inverted U-shape with depending parallel legs or flanges 18 and a central rectangular web 19. The web 19 has a central circular raised embossment 21 with a central hole 22. Small holes 23 for fastening screws are stamped in adjacent ends of the web 19. At tops of the ends of both legs 18 are stamped L-shaped slots 24. Each of the four slots 24 have a horizontal portion 26 open to the end of the clip and a blind vertical portion 27 extending downwardly from the horizontal portion. The web 19, at each end of the clip 11 extends over a space defined by an imaginary projection of opposed slots 24. Holes 28 in the legs 18 can be used to suspend cables, tie straps or the like.

    [0012] The unitary grid tee clip part 12 has a generally rectangular profile in plan view. A centered circular embossed depression 29 has a central hole 31. Ends of the clip 12 are diagonally symmetrical with a bent over tab 32 at one edge and a short bent up tab 33 on an opposite edge. A slot 34 is cut in the body of the clip 12 to form a cantilevered spring arm 36 on each end of the clip 12. Each arm 36 extends from adjacent a free end of the bent over tab 32 and resiliently supports the bent up tab 33 in the illustrated position. Fastener receiving holes 37 are formed adjacent a base of each spring arm 36. Heads of fasteners, such as self-tapping sheet metal screws located in the holes 37 have sufficient clearance provided by the embossments 27, 21 to allow the parts to pivot relative to one another.

    [0013] The clip assembly 10 can be installed on a conventional grid tee 16 by initially misaligning it counter-clockwise looking down relative to the grid tee so that the grid tee flange passes between the bent over tabs 32 when the assembly is raised against a flange 38 of the tee 16. The spring arms 36 and tabs 33 are temporarily deflected downwardly relative to the clip proper as the clip is pushed up against the flange 38. The clip 12 is then rotated clockwise so that the bent over tabs 32 grip the top of the flange 38 and the bent up tabs 33 snap up at the edge of the flange to thereby lock the clip 12 on the grid tee 16. In severe service applications, the clip 12 can be fixed to the grid tee 16 by driving self-tapping screw fasteners through the holes 37 into the flange 38.

    [0014] The bent over tabs 32 and the bent up tabs 33 have low profiles and do not extend appreciably above the grid tee flange 38. This is a benefit when ceiling tiles 17 are used in combination with the baffles 14. A bent over tab 32 lies flat against the top side of the flange 38 so that it only raises a ceiling tile locally above the flange a distance essentially equal to the thickness of the sheet metal from which it is made.

    [0015] The acoustical baffle 14 of the invention is typically roll formed or press brake formed from an elongated strip of sheet metal into a U-shaped cross-section. The illustrated cross-section is rectangular but other U-shaped forms, such as V-shapes and rounded shapes are contemplated. By way of example the baffle can be 1-1/2 inch wide and 4 inch or 6 inch deep with a length of 12, 10, 8, 6, 4, and 2 feet. Upstanding or vertical walls 41 of the baffle 14 are characterized by inturned flanges 40 having a horizontal part 42 extending from a wall 41 and a depending vertical part 43 extending downwardly from the respective horizontal part and terminating at a longitudinal edge of the sheet material from which a baffle 14 is made.

    [0016] The baffle flanges 40 are proportioned to slide endwise through the clip slots 24. A strong connection between the clip 11 and a baffle 14 is formed when the flanges 38 are received in both sets of the clip slots 24. The connection is highly resistant to lateral forces on the baffle 14 because the vertical flange parts 43 resist lateral pull out by engagement with the vertical portions 27 of the slots 24 and the web 19 of the clip 11 restrains the horizontal part 42 of the baffle flange 40 against upward movement.

    [0017] Where the grid tee engaging part 12 is rotated 90 degrees relative to the baffle support part 11 from the position illustrated in FIG. 1, self-tapping screws can be driven through the preformed holes 23 into the baffle horizontal flange parts 42 to augment the strength of the connection between the clip 11 and baffle 14.

    [0018] In the view of FIG. 1 the baffle 14 is transverse to the grid tee 16. The baffle 14 can be supported in parallel relation to the grid tee 16 when the grid tee clip 12 is rotated 90 degrees relative to the baffle supporting part or clip 11. Moreover, the clip 11 can be oriented at other angles, enabling the baffle 14 to be supported diagonally relative to a grid tee 16.

    [0019] FIGS. 3 and 4 illustrate a modified form of clip assembly 50. The baffle support clip 11 and grid tee engaging clip 12 are structurally and functionally identical to those described above as they interact with a baffle and grid tee. The clip assembly 50 affords two additional axes of freedom obtained by a pivot joint 51 interposed between the parts 11, 12. The pivot joint 51 is made by a pair of preferably identical U-shaped sheet metal brackets 52 pivotally joined by a rivet 53. The rivet 53 is assembled through holes 54 in each bracket leg 56. Webs 57 have holes 58 for receiving associated rivets 13 assembled through respective holes in the baffle support clip 11 and grid tee engaging clip 12. The rivets are set loose enough to allow relative pivotal movement of the parts in which they are assembled. The center axis of the rivet or pin 53 is perpendicular to the center axes of the other rivets 13.

    [0020] The clip assembly 50, for example, allows a baffle 14 to be suspended in a vertical orientation from an inclined grid tee 16 as shown in FIG. 5 or a grid tee that is curved in a vertical plane where the baffle 14 is transverse to the grid tee.

    [0021] The baffle support clip 11 and a baffle 14 with which it is assembled can be suspended directly by a cable or rod having an end fitting and threaded through the central hole 22.

    [0022] FIGS. 6, 7 and 8 illustrate a stamped sheet metal clip 60 useful for joining intersecting baffles 14 of the disclosed type. The clip 60 has an elongated rectangular profile in plan view with a width slightly narrower than the width of a baffle and a length exceeding three times its width. The clip 60 is symmetrical about its mid-length having a center section 61 and end sections 62 on opposite edges of the center section. The center section 61 has a pair of depending tabs 63. The tabs 63 are in planes parallel to the lengthwise direction of the clip 60 and are aligned with each other on a line transverse to the length of the clip. Vertical edges 64 on each tab 63 are spaced to provide a close fit with opposed vertical flange parts 43 of a baffle 14. The two tabs 63 when positioned in the top of a baffle 14 make the clip 60 self-aligning to the baffle in a direction transverse to the baffle. Holes 66 are located to overlie the horizontal flange parts 42 and receive self-tapping screws driven into the flange to securely fix the clip 60 to the transverse baffle 14. Each end section 62 includes a pair of depending longitudinally spaced and aligned tabs 67. The width of the tabs 67 is the same as the spacing of the faces of the vertical parts 43 of the baffle flanges 38 so that when inserted in the top of a baffle 14, they index or align the clip 60 and baffle. Holes 68 for self-tapping screws are located to overlie the horizontal parts 42 of the baffle flanges 40. The screws lock the clip 60 on a baffle oriented in the longitudinal direction of the clip 60. Slots 71 are cut out of the clip body at the transverse junction of each end section 62 and the center section 61. The clip is slightly offset along the line of the slots 71 so that the end sections 62 are slightly higher, for example, 1/32 inch, than the center section 61.

    [0023] FIG. 8 illustrates an intersection between two baffles joined by the clip 60. The clip center section 61 overlies a "through" baffle 14 and an end section 62 overlies a cross baffle 14 abutting the through baffle. The clip 60 secures the baffles 14 together in abutting relation with screws driven through the holes 66, 68 into the underlying baffle flanges 38.

    [0024] Where another cross baffle 14 is to be installed at the same location along the through baffle 14 in line with the illustrated baffle on the opposite side of the through baffle, it is secured with the clip in the manner described. Where only one cross baffle 14 is to be used at the same location, one of the end sections 62 is cut off at the slots 71. The slight elevation of a side section 62 above the center section 61 serves to hold a cross baffle 14 slightly higher than the through baffle 14. This avoids a gap at the bottom of the cross baffle which would otherwise occur if the baffle bottoms were at the same level due to the radius of the bend of the sheet material where the bottom and side of the through runner meet.

    [0025] While the invention has been shown and described with respect to particular embodiments thereof, this is for the purpose of illustration rather than limitation, and other variations and modifications of the specific embodiments herein shown and described will be apparent to those skilled in the art. The invention is defined by the appended claims.


    Claims

    1. In combination, an elongated baffle (14) and a suspension clip (11), the baffle having a U-shaped cross-section including spaced generally vertically extending sidewalls, an upper edge of each sidewall having inwardly directed flanges (40), the suspension clip (11) having an inverted U-shape body, including a horizontal web (19) and depending flanges (18) at opposite sides of the web (19), the flanges (18) each having opposed ends and a slot (24) at each end adjacent the web, each slot (24) extending generally horizontally inwardly from the associated flange end the flanges of the baffle being disposed in the slots (24) of the clip (11), the web (19) at each end of the clip (11) overlying a respective flange (40) of the baffle and confining a respective flange (40) to the slot (24), characterized in that the baffle flanges (40) have a horizontal portion (42) adjacent a respective sidewall and a vertical portion (43) spaced from the respective sidewall and depending from the horizontal portion (42),and in that each slot (24) of the clip flanges (18) extends to a vertical slot, the vertical slot extending downwardly away from the web (19).
     
    2. The combination of claim 1, wherein said web (19) has a central hole (22) enabling the clip to be suspended by an element (13) extending upwardly through said hole.
     
    3. The combination of claim 2, wherein said clip (11) is attached to a grid tee engaging clip (12) by a rivet (13) comprising said element.
     
    4. A clip assembly (50) comprising a baffle engaging clip (11) joined to a grid tee engaging clip (12), the baffle engaging clip (11) being constructed and arranged to support a U-shaped acoustical baffle (14) having inturned flanges (40) at upper ends of generally vertical sidewalls by engaging undersides of the sidewall flanges, the baffle engaging clip (11) comprising a stamped sheet metal body, the body having a U-shaped configuration that is inverted in use, the body having a central generally horizontal web (19) and two generally vertical, mutually parallel flanges (18) depending from the web, each flange (18) having ends with a slot (24) at each end, each slot (24) having a generally right angle shape, the slots (24) of one flange being aligned with the slots of the other flange on lines perpendicular to the flanges, each slot (24) being adjacent the web (19), open at an end of a respective flange (18), extending horizontally inwardly adjacent the web (19) and downwardly away from the web (19) at a distance from the flange end, the web (19) having ends extending longitudinally beyond the downward portions of an adjacent pair of flange slots (24) whereby said web ends serve to vertically restrain right angle shaped flanges at upper ends of U-shaped baffles, the grid tee engaging clip (12) being constructed and arranged to support the baffle engaging clip (11) by engaging upper sides of a grid tee flange, characterized in that the baffle engaging clip (11) and the grid tee engaging clip (12) are joined by a bracket assembly having one part (52) pivotally connected to the baffle engaging clip about a first axis, a second part (52) pivotally connected to the grid tee engaging part about a second axis, the first and second parts (52) being pivotally connected together about a third axis perpendicular to both said first and second axes.
     
    5. A clip assembly as set forth in claim 4, including a central hole (22) in the web (19) for suspending the clip.
     
    6. A clip assembly as set forth in claim 5, including a rivet (13) in the central hole connecting the clip body to the grid engagement clip (12).
     
    7. A clip assembly as set forth in claim 5, including a rivet in a hole connecting to one of a pair of U-shaped mutually pivoting parts, the other of the pair of mutually pivoting parts being connected to the grid tee engaging clip.
     
    8. A clip assembly as set forth in claim 4, wherein the baffle engaging clip flanges have aligned holes.
     


    Ansprüche

    1. In Kombination, ein längliches Leitblech (14) und eine Aufhängungsklammer (11), wobei das Leitblech einen U-förmigen Querschnitt aufweist, einschließlich beabstandeter, allgemein sich vertikal erstreckender Seitenwände, wobei eine Oberkante jeder Seitenwand nach innen gerichtete Flansche (40) aufweist, wobei die Aufhängungsklammer (11) einen invertierten U-förmigen Körper, einschließlich eines horizontalen Stegs (19) und abhängiger Flansche (18) an gegenüberliegenden Seiten des Stegs (19) aufweist, wobei die Flansche (18) jeweils gegenüberliegende Enden und einen Slot (24) an jedem Ende angrenzend an den Steg aufweisen, wobei jeder Slot (24) sich allgemein horizontal nach innen von dem zugehörigen Flanschende der Flansche des Leitblechs erstreckt, die in den Slots (24) der Klammer (11) angeordnet sind, wobei der Steg (19) an jedem Ende der Klammer (11) über einem jeweiligen Flansch (40) des Leitblechs liegt, und einen jeweiligen Flansch (40) in dem Slot (24) einengt, und dadurch gekennzeichnet, dass die Leitblechflansche (40) einen horizontalen Abschnitt (42) angrenzend an eine jeweilige Seitenwand und einen vertikalen Abschnitt (43) aufweisen, der von der jeweiligen Seitenwand und abhängig von dem horizontalen Abschnitt (42) beabstandet ist, und wobei sich jeder Slot (24) der Klammerflansche (18) zu einem vertikalen Slot erstreckt, wobei sich der vertikale Slot von dem Steg (19) nach unten weg erstreckt.
     
    2. Kombination nach Anspruch 1, wobei der Steg (19) ein zentrales Loch (22) aufweist, das es der Klammer ermöglicht, durch ein Element (13) aufgehängt zu werden, das sich durch das Loch nach oben erstreckt.
     
    3. Kombination nach Anspruch 2, wobei die Klammer (11) durch einen Niet (13) an einer Gitter-T-Eingriffsklammer (12), umfassend das Element, befestigt ist.
     
    4. Klammeraufbau (50), umfassend eine Leitblech-Eingriffsklammer (11), die an einer Gitter-T-Eingriffsklammer (12) angeschlossen ist, wobei die Leitblech-Eingriffsklammer (11) konstruiert und angeordnet ist, um ein U-förmiges akustisches Leitblech (14), das eingedrehte Flansche (40) an oberen Enden von allgemein vertikalen Seitenwänden aufweist, durch Ineingriffnehmen von Unterseiten der Seitenwandflansche, zu stützen, die Leitblech-Eingriffsklammer (11) umfassend einen gestanzten Blechkörper, wobei der Körper eine U-förmige Konfiguration aufweist, die in Verwendung invertiert ist, wobei der Körper einen zentralen allgemein horizontalen Steg (19) und zwei allgemein vertikale, zueinander parallele Flansche (18) aufweist, die von dem Steg hängen, wobei jeder Flansch (18) Enden mit einem Slot (24) an jedem Ende aufweist, jeder Slot (24) eine allgemein rechtwinklige Form aufweist, wobei die Slots (24) eines Flansches mit den Slots des anderen Flansches auf senkrechten Linien zu den Flanschen ausgerichtet sind, wobei jeder Slot (24) an den Steg (19) angrenzend, an einem Ende eines jeweiligen Flansches (18) offen ist, der sich horizontal nach innen angrenzend an den Steg (19) erstreckt und nach unten, weg von dem Steg (19) mit einem Abstand von dem Flanschende, der Steg (19), Enden aufweist, die sich in Längsrichtung über die nach unten gerichteten Abschnitte eines angrenzenden Paares von Flanschslots (24) erstrecken, wodurch die Stegenden dazu dienen, rechtwinklig geformte Flansche an oberen Enden von U-förmigen Leitblechen vertikal einzuschränken, wobei die Gitter-T-Eingriffsklammer (12) konstruiert und angeordnet ist, um die Leitblech-Eingriffsklammer (11) durch Ineingriffnehmen von oberen Seiten eines Gitter-T-Eingriffsflansches zu tragen, dadurch gekennzeichnet, dass die Leitblech-Eingriffsklammer (11) und die Gitter-T-Eingriffsklammer (12) durch einen Halterungsaufbau angeschlossen sind, der einen Teil (52), der mit der Leitblech-Eingriffsklammer um eine erste Achse schwenkbar verbunden ist, einen zweiten Teil (52), der dem Gitter-T-Eingriffsteil um eine zweite Achse schwenkbar verbunden ist, aufweist, wobei der erste und der zweite Teil (52) um eine dritte Achse senkrecht zu sowohl der ersten als auch der zweiten Achse schwenkbar miteinander verbunden sind.
     
    5. Klammeraufbau nach Anspruch 4, einschließlich eines zentralen Lochs (22) in dem Steg (19) zum Aufhängen der Klammer.
     
    6. Klammeraufbau nach Anspruch 5, die eine Niet (13) in dem zentralen Loch einschließt, das den Klammerkörper mit der Gitter-T-Eingriffsklammer (12) verbindet.
     
    7. Klammeraufbau nach Anspruch 5, einschließlich einer Niet in einem Loch, die mit einem Paar von U-förmigen zueinander schwenkbaren Teilen verbunden ist, wobei das andere des Paares von zueinander schwenkbaren Teilen mit der Gitter-T-Eingriffsklammer verbunden ist.
     
    8. Klammeraufbau nach Anspruch 4, wobei die Leitblech-Eingriffsklammerflansche ausgerichtete Löcher aufweisen.
     


    Revendications

    1. En combinaison, un déflecteur allongé (14) et une attache de suspension (11), le déflecteur ayant une section transversale en forme de U incluant des parois latérales espacées s'étendant généralement verticalement, un bord supérieur de chaque paroi latérale ayant des collerettes dirigées vers l'intérieur (40), l'attache de suspension (11) ayant un corps en forme de U inversé, incluant une bande horizontale (19) et des collerettes dépendantes (18) au niveau de côtés opposés de la bande (19), les collerettes (18) ayant chacune des extrémités opposées et une fente (24) au niveau de chaque extrémité à proximité de la bande, chaque fente (24) s'étendant généralement horizontalement vers l'intérieur depuis l'extrémité de collerette associée, les collerettes du déflecteur étant disposées dans les fentes (24) de l'attache (11), la bande (19) au niveau de chaque extrémité de l'attache (11) recouvrant une collerette (40) respective du déflecteur et confinant une collerette (40) respective sur la fente (24), caractérisé en ce que les collerettes (40) de déflecteur ont une partie horizontale (42) à proximité d'une paroi latérale respective et une partie verticale (43) espacée de la paroi latérale respective et en fonction de la partie horizontale (42), et en ce que chaque fente (24) des collerettes d'attache (18) s'étend jusqu'à une fente verticale, la fente verticale s'étendant vers le bas à l'écart de la bande (19).
     
    2. Combinaison selon la revendication 1, dans laquelle ladite bande (19) a un trou central (22) permettant à l'attache d'être suspendue par un élément (13) s'étendant vers le haut à travers ledit trou.
     
    3. Combinaison selon la revendication 2, dans laquelle ladite attache (11) est fixée à une attache de mise en prise de té de grille (12) par un rivet (13) comprenant ledit élément.
     
    4. Ensemble attache (50) comprenant une attache de mise en prise de déflecteur (11) jointe à une attache de mise en prise de té de grille (12), l'attache de mise en prise de déflecteur (11) étant construite et disposée pour supporter un déflecteur acoustique en forme de U (14) ayant des collerettes (40) tournées vers l'intérieur au niveau des extrémités supérieures de parois latérales généralement verticales en entrant en prise avec des faces inférieures des collerettes de paroi latérale, l'attache de mise en prise de déflecteur (11) comprenant un corps de tôle estampé, le corps ayant une configuration en forme de U qui est inversé lors de l'utilisation, le corps ayant une bande horizontale généralement centrale (19) et deux collerettes généralement verticales, mutuellement parallèles (18) en fonction de la bande, chaque collerette (18) ayant des extrémités dotées d'une fente (24) au niveau de chaque extrémité, chaque fente (24) ayant une forme d'angle généralement droit, les fentes (24) d'une collerette étant alignées sur les fentes de l'autre collerette sur des lignes perpendiculaires aux collerettes, chaque fente (24) étant à proximité de la bande (19), ouverte au niveau d'une extrémité d'une collerette respective (18), s'étendant horizontalement vers l'intérieur à proximité de la bande (19) et vers le bas à l'écart de la bande (19) au niveau d'une distance de l'extrémité de collerette, la bande (19) ayant des extrémités s'étendant longitudinalement au-delà des parties vers le bas d'une paire adjacente de fentes de collerette (24) moyennant quoi lesdites extrémités de bande servent à retenir verticalement des collerettes en forme d'angle droit au niveau d'extrémités supérieures de déflecteurs en forme de U, l'attache de mise en prise de té de grille (12) étant construite et disposée pour supporter l'attache de mise en prise de déflecteur (11) en entrant en prise avec les côtés supérieurs d'une collerette en té de grille, caractérisé en ce que l'attache de mise en prise de déflecteur (11) et l'attache de mise en prise de té de grille (12) sont jointes par un ensemble de support ayant une partie (52) reliée de manière pivotante à l'attache de mise en prise de déflecteur autour d'un premier axe, une seconde partie (52) reliée de manière pivotante à la partie de mise en prise de té de grille autour d'un deuxième axe, les première et seconde parties (52) étant reliées de manière pivotante ensemble autour d'un troisième axe perpendiculaire à la fois auxdits premier et deuxième axes.
     
    5. Ensemble attache selon la revendication 4, incluant un trou central (22) dans la bande (19) pour suspendre l'attache.
     
    6. Ensemble attache selon la revendication 5, incluant un rivet (13) dans le trou central reliant le corps d'attache à l'attache de mise en prise de grille (12).
     
    7. Ensemble attache selon la revendication 5, incluant un rivet dans un trou se reliant à l'une d'une paire de parties pivotantes mutuellement en forme de U, l'autre de la paire de parties pivotantes mutuellement étant reliée à l'attache de mise en prise de té de grille.
     
    8. Ensemble attache selon la revendication 4, dans lequel les collerettes d'attache de mise en prise de déflecteur ont des trous alignés.
     




    Drawing